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Mark Hartman, 34, right, helps his girlfriend Julia Le, 35, of San Jose, Calif., with her snorkel gear at Bai Nhat beach on Con Son Island, part of the Con Dao Islands.The 16 mountainous islands and islets are situated about 143 miles southeast of Ho Chi Minh City in Vietnam, in the South China. Photo taken Thursday, May 5, 2010...Kevin German / LUCEO For the New York Times